Sunday, 7 August 2016

Arduino Project #2: Phone Dialer

This project is to make a phone dialing adaptor using Arduino to simply dialing the intercom extensions.

Saturday, 21 May 2016

Focus Stacked Bug


Today morning, my son found a dead bug with bright colors around our home. Suddenly I realized the opportunity for a stacked photo and swung into action. I wanted to do it for a while and this was good chance before the colors go away. below are couple of selected ones.


Friday, 13 May 2016

First Focus Stack using automated Rail

I tried to do the real stack using the automated setup. Below is the picture of the final image. Because of the shallow depth of field, I had to do a stack of 64 images to cover the scene. This is next to impossible to do manually. To put things in perspective of the magnification, I have added a hair as well in the frame.


Wednesday, 4 May 2016

Focus stack automation - Rail Integration

As posted last time, I had received the rail. I have it integrated now. Also, i have implemented the camera triggering aspect. I am using opto-isolator for that. I got it all put together. Now I can use it for taking photos as expected. Here are some pictures of the setup.


Wednesday, 27 April 2016

My first Focus Stacked Macro Image

While I am trying to make the automation to do the focus stacking, it is also important to try out the stacking manually.  Today I did my first ever macro focus stacked image of a flower.

Setup: three extension tubes (36mm + 20mm + 12mm = 68mm) and reversed 50mm lens.  This gives a 2:1 macro (double size) image.  Here is the setup and the result.  Its a stack of 10 images done in photoshop.




Saturday, 23 April 2016

Focus Stacking Automation, First proto is ready

Hi there,

I have an update on the project. I was able to, at last, make everything into a prototype mode. It is working and getting into some shape.


Thursday, 21 April 2016

Aurdino for macro stacking - testing the water

I had ordered some of the necessary elements and have started to do some of the basic stuff with each. I am yet to get the rail itself and it may take some more time. But for the testing I have just connected two wheels to the Stepper Motor.


What I have now:
1) Aurdino Uno
2) Stepper Motor
3) LCD Display, 16x4
4) Keypad, 4x4
5) Easydriver for Stepper Motor
And accessories like Breadboard, Jumper wires, multimeter..


Friday, 1 April 2016

Starting with Arduino.. Its exciting prospect.

Recently I came across a post about developing a automated focus stacking. It uses and Arduino based controller at the heart of it.  You can then program the Arduino appropriately. I have had no experience with Arduino. But I have decided to do one myself.  So watch this space for more updates..

Monday, 25 January 2016

Collated this data for my own understanding. Sharing it as others may find it useful. Although care is taken for accuracy, cannot guarantee it and please check yourself before deciding.



Thursday, 25 March 2010

Remove the external links from an Excel File.

Sometimes its so happens that when you open an Excel file, it asks if the External Data needs to be updated or not. But you may not have intentionally given any external links. It’s an irritation then. But How to get rid of it?

Thursday, 18 February 2010

Excel Function :TABLE



Its been a while since I have done some posting. This option in excel is something which I thought would be very useful for many.

Its the TABLE Function in MS Excel. This is especially useful in the following scenarios.

Saturday, 14 November 2009

Treeview Structure in VB.Net

In this post, we will look at how the Treeview can be used.

I am using Visual Basic 2008 Express Edition.

In one of my earlier posts, I had explained in detail about Treeview in Excel-VBA. Through this post, I would like to bring the VB.Net way of the control.

Wednesday, 10 June 2009

search and find all supressed features in proe

How to find all supressed objects in Proe (Pro Engineer) easily.. Yes, its easy.. no manual search is needed... Thanks to to ProE seach method..

Tuesday, 19 May 2009

Proe Function / Relation to round the decimal places

Its strange that ProE does not have a ROUND function. At least I counldnt find it.

It has two funtions.
Ceil will always round it up.
Floor will always round it down.

I have used both to get the ROUND functionality.
here is the relation...

Saturday, 28 March 2009

How to use VLookUp in Microsoft Excel.



Tool : MS Excel.
Topic : The function - VLOOKUP.



This is a very useful function to extract data from the table.

Microsoft says..
"Searches for a value in the leftmost column of a table, and then returns a value in the same row from a column you specify in the table."

The format.
VLOOKUP(lookup_value, table_array, col_index_num, range_lookup)


Tuesday, 24 February 2009

How to Start with VB Programming (VBA) in MS Excel






The possibilities of using VB (VBA to be precise) is almost endless and it’s not too complicated (to do simple stuff) if you put bit of an effort and with a small programming background.


Sunday, 22 February 2009

Basics of Excel functions and relations.





Through this post, I would like to introduce the Built in Functions of Microsoft Excel to a beginner. Let me put some excel functions that could be of use to those who what to make a start.

Before touching upon some of the functions, some introductions. The first thing that I would recommend for a beginner is to browse through the list of functions and its uses. At this stage, forget how it to be used, but keep an eye one what all you can do using functions. For that, go to INSERT -> FUNCTIONS. You will see the following dialog. Here you can either select ALL, or a specific category like TEXT. Now select a function and at the bottom, you will see what it will do. To find more detailed explanation, click HELP ON THIS FUNCTION.



Note: Click the cell with Function(s) and press F2 and you will be able to see the references in different colors.


Sunday, 26 October 2008

Pro/Animation: Step 1 - A simple animation.

This post is to get you a very basic Animation that you can use if you are new to animation.
Proe Version : WF2

Quick Introduction:

ProE Animation is a typical ProE Module in the sense that sometimes its not easy to start with. But once you get the grip of it, its so easy and powerful. Most tend to think that it’s a hard think to crack but that’s NOT the case at all. I would try to post a few to get you started.

Friday, 26 September 2008

Wheel Rolling and falling. Made in ProE Mechanism.




This is the continuation of the previous post that I had.

I modified the previous mechanism a little bit, and I got this. I removed the slot-follower connection and instead I added an additional pin connection which makes the wheel rotate about the vertical. That plus the manipulation of the tilting angle resulted in this. I think the rendering also is a bit better. It took almost couple of hours to capture the rendered video! But worth the effort..

Here is the video...

Thursday, 25 September 2008

Wheel Rolling and tilting. Made in ProE Mechanism.




This is a Mechanism (with Animation) of a wheel rolling along a guide curve, tilting on its way..


I was browsing through the PTC Forum and found a requirement. He wanted to simulate a wheel rolling along a curve with a possibility of tilting as well.

I have been playing around with mechanism options for my other task. So I thought of giving it a try.